baber/WOPTO huggingface dataset:
Patent GB-786150-A (GB)
Title: Improvements in or relating to the recovery of vitamin b
IPC: C07H23/00
Filed: 1956-05-30
Abstract: Vitamin B12 is recovered in purified form by means of precipitating a heavy metal cyanide Vitamin B12 complex from its solutions, the process being characterized in that the precipitation is effected in an aqueous solution of a water-miscible organic solvent, the pH of the medium being adjusted to about 6.5 to 7.5 by means of a mineral acid after addition of alkali metal cyanide but before addition of heavy metal salt.  As acid there may be used dilute hydrochloric acid. Acidification should be conducted so that the precipitation of the complex takes place at pH 2 to 3.5, preferably 2.5 to 2.8. The complex precipitate is separated, stirred with phenol or one of its homologues, and decomposed with concentrated alkali metal cyanide to obtain the Vitamin B12 in the phenolic layer. The Vitamin B12 is obtained therefrom by the addition of a non-polar solvent, e.g. chloroform or carbon tetrachloride. Specification 728,048 is referred to.
Patent GB-733835-A (GB)
Title: Improvements relating to control systems for electric motors
IPC: H02P5/50
Filed: 1953-06-17
Abstract: 733,835. Control of several A.C. motors. ALGEMENE KUNSTZIJDE UNIE N.V. June 17, 1953 [June 30, 1952], No. 16779/53. Addition to 715,996. Class 38 (3). A machine 19 and a number of motors 20, 21, between which frequency converters 22, 23, 24 are connected in the manner described in the parent Specification, are each coupled to a synclironous polyphase generator 25, 26, 27 for feeding a group of motors 28, 29, 30. The machine 19 is driven by a motor 31 of the commutator type with provision for shifting brushes 32. The speed of the motor 21 is made dependent upon that of the motor 19 by means of a polyphase motor 34 which drives a mechanical transmission device 36 through hydraulic slip clutch 35. An adjusting member for the transmission device is coupled through slip clutch 37 with the brush shifter for the motor 31, by means of a Selsyn arrangement, for example. The speed of the motor 20 is controlled by a polyphase motor 8 which is connected to the machine 19 on the stator and rotor sides and which drives the frequency conveter 22 through worm wheel 5, worm 6 and a non-slip mechanical transmission device 7 consisting of a continuously-variable belt drive device. Remote control of the device 7 is effected by servo motor 38 and feeler 39 in accordance with changes in the material 40 to be conveyed. The speed of the motor 21 is controlled by a slip-ring motor 11 driving a synchronous generator 12 and connected to the motor 20 on the stator and rotor sides, the output of the generator being applied to an amplifier 13 and the drive comprising a mechanical transmission device 7<SP>1</SP>. The amplifier feeds a synchronous motor 14 driving the frequency converter 23. Winding bobbins 41 are driven directly by motors 30, and, for constant tension winding, a roller 42 controls a device 43 for operating servo motor 44 of the transmission device 71.
Patent GB-769851-A (GB)
IPC: H05K5/02
Filed: 1955-06-13
Abstract: 769,851. Mounting taximeters. GEECEN, Ltd., and WELLAND, J. E. T. June 13, 1955, No. 16942/55. Class 106 (3). Means for mounting a taximeter 1 comprises a projection 3, extending from the base plate 2, having undercut recesses 17, 18 in which engage a pair of clamping elements 6, 9, a screw 12 being provided to draw the elements 6, 9 together to grip the projection 3 and means, e.g. a seal cup 13, for holding a seal, for securing the elements against unauthorized displacement. The clamping element 6 is provided with means, e.g. the tongue 8, for attachment to the vehicle. The recesses 17, 18 may be provided on the four sides of a projection 3 to allow of alternative mounting positions. A stud 5 in one member 6 engages a locating hole 4 in the base plate 3. Locking means associated with the vehicle adapting gear device may also be secured by the screw 12 and a common seal'be provided.
Patent GB-1516818-A (GB)
Title: Relocatable suspended light fixture
IPC: F21V21/02
Filed: 1977-04-25
Abstract: 1516818 Lamp supports ARMSTRONG CORK CO 25 April 1977 [23 April 1976] 17193/77 Heading F4R A suspended ceiling system comprises a plurality of runners forming a grid, ceiling boards supported by the grid, at least two track members supported by the grid, and a lighting fitting suspended by at least two support posts, the upper end of each post being slidable in a respective track member and the lower end being connected, preferably slidably, to the fitting. The track members may be parallel or perpendicular to one another and may carry electric power to the fitting.
Patent GB-222569-A (GB)
Title: Improvements in the construction of navigable vessels
IPC: B63B3/00
Filed: 1923-07-03
Abstract: 222,569. Dunlop, J., (Reid, J.). July 3, 1923. Sectional vessels.-Sectional vessels are built with at least one section having a double skin and either equipped with means for careening the same through an angle of 90‹ for passage as a section through constricted waterways such as canals or constructed for division longitudinally so that one half can be lowered relatively to the other and then moved laterally as shown in Fig. 10. Any remaining sections not built with a double skin are provided with removable blisters which constitute a double skin. An arrangement is shown in Fig. 2, where the mid-section a has a double skin b and top side careening tanks c. The fore-and-aft sections e, f have blisters m. Junction between the sections comprises angle bars i across the tank top j and angle bars i<1 >across the double bottom distance bars k, Fig. 6, being inserted between the flanges. The blisters m are attached to the main structure by jointing-bars. The inner skin is stiffened by longitudinals i<2>.
Patent GB-388636-A (GB)
Title: Improvements in or relating to the manufacture of margarine
IPC: A23D7/05
Filed: 1932-06-18
Abstract: 388,636. Solidifying liquids by cooling. BORGEN, H., Danesgarth, Asbley Road, Hale, Cheshire, and WADSWORTH, G. W., Pendennis, Church Road, Urmston, Lancashire. June 18, 1932, No. 17286. [Class 29.] In apparatus for cooling, beating, and kneading margarine emulsion of the kind described in Specifications 166,648 and 316,481, [both in Class 29, Cooling &c.], the uniformity of the product is maintained constant by utilizing pressure variations in the inlet pipe of the emulsion to control the rate of flow of the cooling medium. The pipe a<1> through which the emulsion is fed to the drum d, and the outlet pipe c for the cooling medium, are fitted with casings a, b containing flexible diaphragms e, f respectively, the covers a<111>, b<11> of the casings being provided with ports ell, f<1> connected by a conduit g containing oil or other fluid. The passage of cooling medium through the pipe c is controlled by a valve b<111> mounted on the stem k of a member k<1> bearing against the diaphragm f, the valve being loaded by an adjustable spring h. In operation, a fall in temperature of the emulsion or of the cooling medium causes an increase in pressure in the emulsion which deflects the diaphragm e, hence the diaphragm f, so that the valve b<111> is operated to restrict the outlet of the cooling medium.
Patent GB-584331-A (GB)
Title: Improvements in or relating to frictional devices used as driving or braking means in printing and other machines
IPC: B41F3/80
Filed: 1944-09-11
Abstract: 584,331. Feeding webs. JONES, K. W. Sept. 11, 1944, No. 17289. [Class 100 (i)] [Also in Groups XXIV and XXXIV] The feeding or re-winding of the paper web in a printing or other machine is controlled by controlling the vacuum in a vacuum operated friction clutch or brake by the variations in length of a loop in the web, the loop being arranged to cover and uncover an aperture by which air is admitted to the vacuum system. In Fig. 1, a chamber 11 formed between clutch discs 1, 2 rotatable on a tubular axle 3 is connected by apertures 12, pipe 13 and a manually operated valve 14 to an exhauster. The discs are grooved at 7, 8 for driving belts 9, 10. A loop 18 in the paper web passing through a printing machine controls by its varying length an aperture 16 in a plate 17 upon which the loop lies, the aperture being connected by pipe 15 to the exhauster pipe 13. When the aperture 16 is covered a vacuum sufficient to effect a driving connection between the discs is formed but if the loop shortens so as to uncover the aperture the reduction in the vacuum causes the clutch to slip. The leakage of air which takes place between the clutch faces prevents overheating thereof. In the cone clutch shown in Fig. 3, the chamber 11 is connected to the pipe 13 by passages 21 in one of the rotatable members 2 and an annular passage 20 in a fixed part 19. The grooves for the driving belts 9, 10 are of unequal diameter so that the clutch acts as a step-up or a reduction gear. A cone brake is also shown. In Fig. 4 the connection of the exhauster pipe 130 to the pipe 13 leading to the clutch chamber 11 is controlled by a valve 24 operated by a bellows 27 connected to the aperture 16 and to the'pipe 130. If the loop 18 lengthens to close the aperture 16, the bellows is exhausted, the valve 24 being' thus moved towards the pipe 130 to reduce the vacuum in the chamber 11 so that the clutch slips. This device is suitable for controlling the drive of the rollers which draw off a web from the reel of a printing machine. For a device used to control the re-winding of the web on to a reel the bellows is arranged to close the valve 24 when the aperture 16 is uncovered by the loop 18 and to open it when the aperture is covered. To. ensure that there is no residual driving friction after the vacuum is cut off cam mechanism may be provided adapted to force the clutch members apart once in a revolution or the cam may compress a spring to an extent sufficient to separate the members when the vacuum is reduced to a predetermined value. According to the Provisional Specification the vacuumoperated clutches and brakes are applicable generally to machines and in printing and other machines, using a paper web, the loop may operate through electric, photo-electric or mechanical means a valve which controls the vacuum either by admitting air or by controlling the communication of the exhauster with the clutch chamber.
Patent GB-863464-A (GB)
Title: Improvements in or relating to the manufacture of shoes
IPC: A43D3/02
Filed: 1956-06-05
Abstract: 863,464. Lasts; shoe making machines. BRITISH UNITED SHOE MACHINERY CO. Ltd. (United Shoe Machinery Corporation). June 3, 1957 [June 5, 1956], No. 17292/56. Class 17(1) A last positioning plate 34 to be applied to the crown face of a last L, to enable the last to be positioned in either one or two chosen orientations in a machine, i.e. for toeport or for heelport operations, has two spaced pairs of positioning faces 36, 38, with the faces of one set lying on either side of and equidistant from the toe to socket plane LCL of the last, and the faces of the other set lying on either side of and equidistant from the mechon link plane HCL. The positioning faces co-operate with adjustable abutments on a support for the last. Faces 36, 38 at both sides are connected by shoulders 40 which are parallel to each other and staggered lengthwise of the plate, so that there are formed at one side a core 42, a short face 36, and a long face 38, and at the other side a long face 36, and a short face 38. The plates which are identical and secured by means of thimbles 30, and pins 32 are attached to right and left shoes in reversed manner, so that the lobes 42 are always innermost. In the construction shown in Figs. 1 to 3 the last is carried by a pallet 10 which has a last pin 58, a spring clip to be received in a notch 44 in plate 34, and fingers 55 carried by a slide 54 and projecting through slots 56 in a plate 57. Fingers 55 engage faces 36 or 38 and are positioned for this engagement by means of a cam groove 60 on the machine which engages a pin 59 on slide 54 Fig. 2 shows faces 38 of right and left hand shoes engaged by fingers 55, so that the heel portions are centred for operation thereon, line HCL being coincident with the centre line PCL of the pallet. In Fig. 3 fingers 55 engage faces 36, so that lines LCL of both right and left shoes are coincident with line PCL and the shoes arranged for operation on the forepart. In moving from one pair of faces to the other, fingers 55 co-operate with shoulders 40 to swing the last about the last pin. In the construction shown in Figs. 5 and 6 the pallet has recesses, equally spaced from line PCL, in which are mounted interchangeable lugs 76, 78 for engagement with faces 36 or 38, the lower parts of the lugs having the same length and form as the recesses. and the upper part of lug 76 being half as long as lug 78. Fig. 5 shows the arrangement of lugs 76, 78 for positioning the heels of left (L) and right (R) shoes, and Fig. 6 for positioning the foreparts of left (L) and right (R) shoes. The arrangement of lugs 76, 78 makes the pockets definitely right or left.
Patent GB-1498284-A (GB)
Title: Process for the production of grained abrasives
IPC: B24D3/00
Filed: 1975-04-25
Abstract: 1498284 Abrasive material DYNAMIT NOBEL AG 25 April 1975 [27 April 1974] 17372/75 Heading C4V A grained abrasive is obtained by subjecting a refractory inorganic abrasive material in grain form and having a crystallite size up to 120 Á to grading by grinding in a bore mill or tube mill contain spherical grinding media having a diameter of from 10-80 mm., whereby essentially only the porous, faulty or coarse crystalline grains are size-reduced and separated off from the rest of the grains. The grinding media may have a diameter of from 20-60 mm. and the abrasive material may have been obtained by solidifying a melt of aluminium oxide or bauxite or a melt of (i) aluminium oxide and/or bauxite and (ii) zirconium oxide and/or Baddeleyite and size-reducing the solidified material.
Patent GB-139994-A (GB)
Title: Improvements in and relating to electrical signalling apparatus
IPC: B66B19/06
Filed: 1919-07-11
Abstract: 139,994. Railing, M. J., and Connaughton, J. J. V. July 11, 1919. Mine signalling systems; order apparatus; recording orders.-In electric signalling- apparatus comprising a ratchetoperated pointer and dial, particularly adapted for mines, each signal is normally cancelled by the next following signal, but the " men on " signal is additionally recorded by illumination of a panel, which persists until the engine starts, as a reminder to the engineman. The pointer is turned step by step, against the tension of the resetting-spring w<1>, by a ratchet m and pawl p, the pawl p being mounted on a lever n which is oscillated by the impact of a set-screw t carried on the cone-shaped core u of the solenoid s, whenever the solenoid is energized. The bell w is rung at the same time by the lever x, which is actuated by the plunger u through a pin working in a slot y in a link y<11>. The ratchet-wheel m has its surface cut away at c<11> to limit its rotation. The signal is cancelled when the holding-pawl p is retracted by the magnet f on receipt of a fresh signal, or by the magnet g on the engine's starting. The signalling-impulses energize the relay d, which closes two circuits, one through the solenoid s which actuates the signal pointer as above, and one through the cancelling-magnet f. The cancelling-magnet f is thus energized by the first of each set of impulses, but it is immediately afterwards thrown out of action till the set has been completed. For this purpose, the circuit of the magnet f is broken by a time-lag device or dash-pot after the. first impulse. The circuit passes through a spring contact x<1> and the selflubricating graphite piston a<1> of the dash-pot, so that it is broken when the piston a<1> is pressed upwards by the solenoid core u. A ball valve d' in the cylinder b<1> permits the piston a<1> to rise freely, but retards its downward motion. When the cancelling-magnet f has been thus de-energized, the pawl p<1> is returned to the position shown in Fig. 1 by the weight s<1>, after an interval during which the weight is thrown upwards and falls again, its neck passing freely through a hole in the arm r'. When three impulses (meaning " men on ") have been received, a roller f<1> revolving with the ratchet-wheel m closes a contact at g' and so, as soon as the contact x<1>, a' has been re-established, closes a circuit through the lamp, which illuminates a " men " panel. The same operation also closes a circuit through the self-holding relay e, which ensures the continued illumination of the lamp even when subsequent signals are received. To enable trains of more than three impulses to be registered while the lamp is alight, a separate locking-winding may be provided on the relay e. The " men " signal is only cancelled when the circuits concerned are broken at c<11> by the magnet g, which is energized by the starting of the engine. The parts described are mounted on a slate slab.
Patent GB-1597178-A (GB)
Title: Compositions containing hydrogenated block copolymers and engineering thermoplastic resins
IPC: C08L77/00
Filed: 1978-05-03
Abstract: A synthetic resin mixture containing a partially hydrogenated block copolymer which contains at least two terminal polymer blocks A comprising a monoalkenylarene having a number average molecular weight of from 5000 to 125000 and at least one intermediate polymer block B comprising a conjugated diene having a number average molecular weight of from 10000 to 300000 where the terminal polymer blocks A make up from 8 to 55% by weight of the block copolymer and where not more than 25% of the arene double bonds in the polymer blocks A and at least 80% of the aliphatic double bonds in the polymer blocks B are hydrogenated, is prepared.   a) from 4 to 40 parts by weight of partially hydrogenated block copolymer,   b) a polycarbonate having a melting point of above 120 DEG C, and c) from 5 to 48 parts by weight of at least one synthetic thermoplastic engineering resin which is different from the other constituents, from the group consisting of polyamides, polyolefins, thermoplastic polyesters, poly(aryl ethers), poly(aryl sulphones), acetal resins, thermoplastic polyurethanes, halogenated thermoplastics and nitrile resins, where the weight ratio between the polyester and the synthetic thermoplastic engineering resin is greater than 1:1, and where at least two of the polymers in the polymer mixture formed in this way form with one another fully or partially continuous, mutually engaging networks. These synthetic resin mixtures can be used as engineering thermoplastics.
Patent GB-976916-A (GB)
Title: Improvements in telescopic guide devices
IPC: A47B9/08
Filed: 1963-05-03
Abstract: 976,916. Adjustable tables; seat adjustments; resilient mountings. P. GOLLER, [trading as MASCHINENFABRIK KARL GOLLER K.G.]. May 3, 1963 [May 9, 1962; March 4, 1963], No. 17473/63. Headings A4H, A4J and A4U. A single, height-adjustable leg of a table, chair &c. comprises a movable, tubular inner member 3 guided in a co-axial tubular outer member 2 and carrying a bracket 4 to which the table top or seat is secured, the member 3 being secured in adjusted position by an eccentric 12 which is operated by a tubular clamp shaft 8 coaxial with the members 2, 3 and non-translatably mounted therein, to engage the inner surface of the tube 2. The eccentric consists of a movable pressure piece 13, engaged in a groove 16 of decreasing depth in a ring 9 welded to the shaft 8, and passing through an aperture 14 in the member 3, so that rotation of the shaft by the handle 11 to bring a shallow part of the slot into engagement with the inner end of the piece 13 forces the piece outwards to lock the members in adjusted position. A spring 17 which is supported on the bottom of the member 2 and enters the shaft 8 urges the member 3 outwards, limit positions being determined by the engagement of corner cages 6, provided with ball bearings 7, with a disc 2 closing the outer member 2 and by a bar 19 co-extensive with the member 2. In a modification shown in Fig. 3 the clamp shaft 28 is parallel to the common axis of circular-section telescopic members 21, 22 of a chair leg and is guided in apertures 33, 34 in bridges 26, 32 the apertures being offset transversely from the common axis. A disc 31 secured to the clamp shaft has a surface 31<SP>1</SP> in contact with the inner surface of the member 22 and lies against a bridge 26 which is secured to the inner member 21 and on rotation of the shaft 28 by the handle 29 the disc 31 moves out of register with the bridge 26 to effect frictional engagement of the surface 31<SP>1</SP> and the circumferential surface of the bridge with the inner surface of the outer member 22 to lock the seat in adjusted position. A pressure spring 35 supports the weight of the chair to make upward adjustment easy and the chair leg is rendered resilient and revolving after the height adjustment is effected by a tubular member 40, a rotatable thrust bearing 44 and a thrust spring 43. In modifications of the embodiment shown in Fig. 3 the clamp shaft is guided in the outer tubular member and the eccentric is arranged in the inner tubular member or the clamp shaft is coaxial with the inner tubular member which is eccentric in the outer tubular member and in a modification of the embodiment shown in Figs. 1 and 2 the eccentric is in the form of a circular disc secured to the clamp shaft.
Patent GB-1212205-A (GB)
Title: Improvements relating to multifilament yarns
Inventor: BRISCOE JOSIAH ALFRED
IPC: D02G1/00
Filed: 1967-04-17
Abstract: 1,212,205. Bulked yarn. IMPERIAL CHEMICAL INDUSTRIES Ltd. 1 April, 1968 [17 April, 1967], No. 17531/67. Heading DIP. An interload yarn is made by subjecting a bundle of substantially parallel tensioned filaments 8 to the action of a deflecting member which intermittently contacts and deflects the bundle so that tension in the filaments cause them to vibrate and become entwined and entangled. As shown, the defecting pins 18 are moved across the path of travel of the filamentary bundle. Pins 18 are mounted on rotating plate 16 which can be mounted normal to the filament path (with the pins mounted obliquely, as shown) or at an angle to the filament path (with the pins mounted normal to the plate): The pins may be provided with grooves or protrusions at their ends. The pins 18 may be mounted on an endless band or a toothed wheel can be used to deflect the filaments. The deflecting members 18 can be mounted on an idler roll, release roll or separator roll of a draw frame or it may be separately driven. The degree of entanglement, coherency factor, is determined by removing a tensioned yam from the package, passing over a feed roll through a groove and over a ceramic pin so as to form it into a flat ribbon. A saphirepointed pin is inserted into the ribbon and the entanglements cause it to move and actuate a counter and a solenoid to withdraw the pin from the ribbon. After a short delay the pin is inserted into the ribbon again. One coherency factor is the number of counts/20 metres of yarn.